ewc
We offer over 70 EWC HVAC products, including Bypass Dampers, Damper Controls & Accessories, Rectangular Dampers, Round Dampers, and Zoning Panels.
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![EWC Controls 22X6 ND-RSD NO Rectangular Damper | 22X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9d6ddc8e-85ac-47de-9b78-174d8b5e8e6c_medium.png?v=1720000482)
22X6 ND-RSD NO | Rectangular Damper | 22X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 22X6 ND-RSD NO
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![EWC Controls 20X10 ND-RSD NO Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_5290a375-a4e9-4039-996f-5f0cafe242c8_medium.png?v=1720000468)
20X10 ND-RSD NO | Rectangular Damper | 20X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X10 ND-RSD NO
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![EWC Controls 20X6 ND-RSD NO Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c00c69ce-321b-4dde-9604-e49a81cf47b3_medium.png?v=1720000477)
20X6 ND-RSD NO | Rectangular Damper | 20X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 20X6 ND-RSD NO
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![EWC Controls 18X18 ND-RSD NO Rectangular Damper | 18X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_7aeaeea8-9260-42b8-abd6-43d162da3302_medium.png?v=1720000491)
18X18 ND-RSD NO | Rectangular Damper | 18X18 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls (OBSOLETE)
Brand: EWC Controls
SKU: 18X18 ND-RSD NO
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![EWC Controls 18X14 ND-RSD NO Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_cc111724-d840-46ce-b184-1a92b8a21e50_medium.png?v=1720000477)
18X14 ND-RSD NO | Rectangular Damper | 18X14 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X14 ND-RSD NO
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![EWC Controls 18X12 ND-RSD NO Rectangular Damper | 18X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_9d1c8415-ecc1-4465-ac32-24c67c19b0a0_medium.png?v=1720000496)
18X12 ND-RSD NO | Rectangular Damper | 18X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X12 ND-RSD NO
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![EWC Controls 18X10 ND-RSD NO Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_96c76f57-8705-4d09-baf8-1a3d02a40fc4_medium.png?v=1720000469)
18X10 ND-RSD NO | Rectangular Damper | 18X10 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X10 ND-RSD NO
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![EWC Controls 18X8 ND-RSD NO Rectangular Damper | 18X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_8bbb1354-c795-4b84-b47f-6b9186b12306_medium.png?v=1720094293)
18X8 ND-RSD NO | Rectangular Damper | 18X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 18X8 ND-RSD NO
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![EWC Controls 16X12 ND-RSD NO Rectangular Damper | 16X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_d88b8a22-3628-476b-9a89-b20b5e18f4c0_medium.png?v=1720000452)
16X12 ND-RSD NO | Rectangular Damper | 16X12 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X12 ND-RSD NO
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![EWC Controls 16X6 ND-RSD NO Rectangular Damper | 16X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_3d39101a-0b64-4041-ae21-608c0dca4b40_medium.png?v=1720000469)
16X6 ND-RSD NO | Rectangular Damper | 16X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 16X6 ND-RSD NO
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![EWC Controls 12X8 ND-RSD NO Rectangular Damper | 12X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_fe092832-a16b-4c5b-b1f2-e538b9743c65_medium.png?v=1720000418)
12X8 ND-RSD NO | Rectangular Damper | 12X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 12X8 ND-RSD NO
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![EWC Controls 10X8 ND-RSD NO Rectangular Damper | 10X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1e1f5449-6826-47c2-a7c4-4f3d6aa85221_medium.png?v=1720000418)
10X8 ND-RSD NO | Rectangular Damper | 10X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 10X8 ND-RSD NO
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![EWC Controls 8X8 ND-RSD NO Rectangular Damper | 8X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_1263399d-7dcc-4772-a3f7-0bb392c51a31_medium.png?v=1720000556)
8X8 ND-RSD NO | Rectangular Damper | 8X8 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 8X8 ND-RSD NO
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![EWC Controls 8X6 ND-RSD NO Rectangular Damper | 8X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd-rsd_c3cdcfef-bb48-4909-b365-0366d2a85e5f_medium.png?v=1720000546)
8X6 ND-RSD NO | Rectangular Damper | 8X6 ND MOTORIZED DAMPER SPRING RETURN - NORMALLY OPEN | EWC Controls
Brand: EWC Controls
SKU: 8X6 ND-RSD NO
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![EWC Controls 20X24 ND Rectangular Damper | 20X24 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_2d61e7b8-32cf-43ef-bb58-1f0c4bec38b1_medium.png?v=1720000521)
20X24 ND | Rectangular Damper | 20X24 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 20X24 ND
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![EWC Controls 20X22 ND Rectangular Damper | 20X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_e0f78a3e-ecc4-4ae8-b471-f3c33964ba39_medium.png?v=1720000497)
20X22 ND | Rectangular Damper | 20X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 20X22 ND
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![EWC Controls 18X26 ND Rectangular Damper | 18X26 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_951081c7-01b2-4116-a02d-4145c71fa410_medium.png?v=1720000463)
18X26 ND | Rectangular Damper | 18X26 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 18X26 ND
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![EWC Controls 16X30 ND Rectangular Damper | 16X30 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_b0ee7fd3-ffd8-4016-9779-8b0bb2d123fd_medium.png?v=1720000438)
16X30 ND | Rectangular Damper | 16X30 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X30 ND
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![EWC Controls 16X28 ND Rectangular Damper | 16X28 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_05fe8c39-d2ff-46df-ba33-fceeae3b0351_medium.png?v=1720000488)
16X28 ND | Rectangular Damper | 16X28 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X28 ND
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![EWC Controls 16X22 ND Rectangular Damper | 16X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_29e89e58-1eaa-43a7-950e-0489f534771a_medium.png?v=1720000468)
16X22 ND | Rectangular Damper | 16X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X22 ND
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![EWC Controls 16X18 ND Rectangular Damper | 16X18 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_4c2e79fd-1294-4770-9172-ff6c02c1d7c7_medium.png?v=1720000432)
16X18 ND | Rectangular Damper | 16X18 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 16X18 ND
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![EWC Controls 14X28 ND Rectangular Damper | 14X28 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_49f11292-5f46-4231-a265-633c870f9a62_medium.png?v=1720000423)
14X28 ND | Rectangular Damper | 14X28 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X28 ND
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![EWC Controls 14X26 ND Rectangular Damper | 14X26 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_e395d9a2-300f-4709-a966-2462c4c2d406_medium.png?v=1720000442)
14X26 ND | Rectangular Damper | 14X26 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X26 ND
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![EWC Controls 14X22 ND Rectangular Damper | 14X22 ND MOTORIZED DAMPER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/nd_4340c020-03ce-4a5d-8fbf-7344da822070_medium.png?v=1720000428)
14X22 ND | Rectangular Damper | 14X22 ND MOTORIZED DAMPER | EWC Controls
Brand: EWC Controls
SKU: 14X22 ND
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